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Keeler D-KAT Instructions For Use Manual

Digital applanation tonometer, z-type
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Keeler Digital Applanation Tonometer (D-KAT)
Z-type
Instructions for use
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Summary of Contents for Keeler D-KAT

  • Page 1 Keeler Digital Applanation Tonometer (D-KAT) Z-type Instructions for use Next...

  • Page 2: Table Of Contents

    12.1 Check procedure with test arm set to 20 Name of components 12.2 Check procedure with test arm set to 60 Switching on / off and configuring the D-KAT 13. Servicing and calibration Switching on / off 13.1 Battery replacement Changing decimal point setting 14.

  • Page 3: Introduction

    ‘Zeiss illumination’ type of Slit Lamps and The Keeler Applanation Tonometer operates according to the thanks to its versatility, the D-KAT Tonometer can be mounted on “Goldmann method”, by measuring intraocular pressure from the and used with slit lamps produced by many manufacturers.

  • Page 4: How The Intraocular Pressure (Iop) Is Measured

    2.5%. is obtained. The doubling prism divides the image and presents *Please Note: Whilst the D-KAT has a Digital read-out that can indicate the two opposing semicircular halves at 3.06mm (see section 7.4.2 decimal point measurement, it is not intended to imply higher accuracy.

  • Page 5: Symbols Used

    2. Symbols used Manufacturers name and address Serial Number Mandatory action sign The CE mark on this product indicates it has been tested to and conforms with the provisions noted within the 93/42/EEC Power / function button This way up General warning sign Material suitable for recycling Type B Applied Part...

  • Page 6: Safety

    Use this instrument only in strict accordance with the instructions contained in this manual. 3.1 Standards applied The Keeler Applanation Tonometer is designated as Class I non-invasive measuring device under EC Directive 93/42 EEC for medical equipment products. The CE mark on this product indicates it has been tested to and conforms to the provisions noted within the 93/42 EEC Medical Device Directive.

  • Page 7: Warnings And Cautions

    • Check your Keeler product for signs of transport / storage damage • Do not use in the presence of flammable gases / liquids, or in an prior to use.

  • Page 8: Cleaning And Disinfection Instruction

    4. Cleaning and disinfection instruction 4.1 Cleaning Tonometer body • Only manual non-immersion cleaning as described below should be used for this instrument. • Wipe the external surface with a clean absorbent, non-shedding cloth dampened with a water / detergent solution (2% detergent by volume) or water / isopropyl alcohol solution (70% IPA by volume).

  • Page 9: Disinfecting The Tonometer Prisms

    4. Cleaning and disinfection instruction 4.2 Disinfecting the Tonometer prisms Rinse the disinfectant from the prism in running water Always disinfect the Tonometer prisms before use. Hand hygiene 10-30 MINS for between 10 and 30 must be considered to prevent any contamination. minutes.

  • Page 10: Tonometer Prism Field Check

    5. Tonometer Prism field check Check the Tonometer prism under the Slit lamp and ensure there are no cracks / chips. the chemical used in the diagnosis process (for example: Fluorescein) will get into the cracks and will show up if observed under the slit lamp. Do not use it if there is any sign of cracks / chips.

  • Page 11: Name Of Components

    1. Power / function button 2. Main body 3. Rotating measurement drum 4. Doubling prism 5. Measurement arm 6. Manufacturers data 7. Test arm attachment point 8. Battery cover 9. LED display D-KAT Z-type Part number: 2414-P-2010 Home Back Next...

  • Page 12: Switching On / Off And Configuring The D-Kat

    3 minutes. Note: The D-KAT will return to the main display at any time if the 7.2 Changing decimal point setting function button is not pressed within the timings listed above.

  • Page 13: Measurement Procedure

    8. Measurement procedure 8.1 Installation on to the Slit Lamp Before installing the Tonometer on a Slit Lamp ensure that they are mutually suitable and that the tonometer is level. • Mount the plate for the Tonometer onto the microscope body using the securing screw.

  • Page 14: Preparing The Patient

    8. Measurement procedure 8.2 Preparing the patient • Use an appropriate topical anaesthetic to numb the cornea. • Place a strip of fluorescein-soaked paper near the outer canthus in the lower conjunctival sac. After a few seconds the lacrimal fluid will be coloured and the paper may be removed. When using drops, we recommend a 0.5% solution of fluorescein sodium.

  • Page 15: Preparing The Slit Lamp Instrument For Examinations At 10X Magnification

    8. Measurement procedure 8.3 Preparing the Slit Lamp instrument for examinations at 10x magnification • Before beginning measurement, check that the eyepieces of Slit Lamp are correctly focused. • Set the brightness control of the instrument to a position of a low intensity.

  • Page 16: Using The Instrument / Taking A Measurement

    8. Measurement procedure 8.4 Using the instrument / taking a measurement 8.4.1 Instructions to the patient • The patient’s head must be firmly positioned on the chin rest and the forehead rest. If necessary, a band may be used to hold the head still.

  • Page 17: Taking The Measurement

    8. Measurement procedure 8.4.2 Taking the measurement • Increase the applanation pressure by rotating the Tonometer measurement drum until the margins of the fluorescein rings • Move the Slit Lamp forward to bring the measuring touch and cross as the eye pulses (Figure 2). The width of prism into contact with the centre of the cornea in the area the fluorescein rings around the contact position of the above the pupil.

  • Page 18: Problem Solving

    9. Problem solving 9.1 The fluorescein ring is too wide or too narrow Cause: Cause: The fluorescein semicircles are too wide. The fluorescein semicircles are too narrow. The measuring prism was not dried after The lacrimal fluid has dried during prolonged cleaning, or the eyelids came into contact measurement.
  • Page 19 9. Problem solving 9.2 The measurement prism does not touch the cornea or too much force has been applied Cause: Cause: If the patient pulls his/her head back even If during measurement the slit lamp is moved slightly, the pulses will become irregular and forward toward the patient or the patient moves the measuring prism contact with the eye toward the slit lamp, the sensor arm will be pushed...
  • Page 20 9. Problem solving 9.3 The two semicircles are not central in the field of vision Cause: The reading in this position is considerably higher than real ocular pressure. Correction: Correction: Using the slit lamp height adjustment Using the joystick, move the slit lamp up and mechanism, lower the slit lamp until the two to the left.
  • Page 21 9. Problem solving 9.4 The inside margins of the fluorescein rings are not aligned and touching Cause: Cause: The semicircular images are well centred. Excessive pressure has been applied. The outer margins are aligned but the inner Correction: margins are not. Reduce pressure until the semicircular Correction: images come closer together and finally the...

  • Page 22: General Information And Suggestions Concerning Measurement

    10. General information and suggestions concerning measurement IMPORTANT NOTE When the measurement procedure for one eye is prolonged excessively, a drying phenomena will occur on the corneal Measurement must be performed as quickly as possible on each epithelium of both eyes. eye.

  • Page 23: Astigmatism

    11. Astigmatism If the cornea is spherical, measurements may be made along any meridian, but it is usual to measure along the horizontal 0° meridian. This is not the case when measurements are made on eyes affected by corneal astigmatism of greater than 3 diopters, 0°...

  • Page 24: Routine Instrument Maintenance

    In the event of the device being outside of the calibration tolerances, it is important to send the device back to Keeler Ltd. or your local dealer for repair and re-calibration. 60 mmHg 12.1 Check procedure with test arm set to 20...

  • Page 25: Check Procedure With Test Arm Set To

    12. Routine Instrument Maintenance 12.1 Check procedure with test arm set to 20 Position 19.5 Turn the drum in the direction of the arrow until the LED display reads 19.5. Then continue to rotate the drum slowly until the measurement arm moves forward. Check to ensure the display reads between 19.5 and 20.5.
  • Page 26 12. Routine Instrument Maintenance 12.2 Check procedure with test arm set to 60 Check 59.0 limit Turn the drum in the direction of the arrow until the LED display reads 59.0. Then continue to rotate the drum slowly until the measurement arm moves forward.

  • Page 27: Servicing And Calibration

    There are no user serviceable parts in this instrument. Service manuals will be available to authorised Keeler service centres and Keeler trained service personnel. 13.1 Battery replacement To replace the battery press in and slide off the battery cover, noting that the positive terminal of the battery is at the top.

  • Page 28: Specifications

    14. Specifications 14.1 Transport, storage and working conditions The following ambient condition limits are recommended for the Keeler Applanation Tonometer, for transport and storage it is recommended that the Tonometer is kept in it’s original manufacturers packaging. Before use the Tonometer should be allowed to adjust to the ambient room temperature for several hours.

  • Page 29: Technical Specifications

    14. Specifications 14.2 Technical specifications Installation: Keeler digital Z-type: for Zeiss type illumination systems Mountable on post on microscope Installation Assembled on the guide plate on the slit lamp Measurement range 5 - 65 mmHg (0.66 - 8.65kPa) 0.49 mN or 1.5% of measurement value,...

  • Page 30: Accessories And Warranty

    15. Accessories and warranty 15.1 Accessories Tonometer doubling prism Part Number 2414-P-5001 Test arm assembly Part Number 2414-P-5045 Z-type post (R) Part Number 2414-P-5038 Tonometer doubling prism Battery Part Number 1909-P-7129 15.2 Product warranty 2 years against faulty workmanship, materials and labour. Warranty will be conditional on routine maintenance and will not cover calibration or mechanical issues caused as a result of lack of maintenance, poor use, incorrect transport or...
  • Page 31 16. Contact, packaging and disposal information India Office Manufacturer Disposal of old electrical and electrical equipment (Applicable in the European Union and other European Keeler India Keeler Limited Countries with separate Collection Systems). Halmer India Pvt. Ltd. Clewer Hill Road...

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